ERBB2 and breast cancer: All four breast cancer subtypes (Luminal A, Luminal B, HER2\documentclass[12pt]{minimal}\usepackage{amsmath}\usepackage{wasysym}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{upgreek}\usepackage{mathrsfs}\setlength{\oddsidemargin}{-69pt}\begin{document}$ + $\end{document}, and triple negative) were represented in the training data (Table S1 in the Supplementary Materials provides an overview).